Lens cap device

Abstract

The invention relates to a lens cover device, comprising a shielding cover device, wherein, the shielding cover device comprises a shielding cover which is provided with a lens through-hole; a linkage device which consists of a pushing part and a linkage part, and the pushing part is glidingly embedded on the shielding cover device, and one end of the linkage part is pivotally connected with the shielding cover device to form a fulcrum; the linkage part is drivingly connected with the pushing part; and also comprising a lens cover which is glidingly arranged on the shielding cover device, and the lens cover is pivotally connected with the other end of the linkage part which is opposite to the fulcrum to form a linkage state between the lens cover and the linkage part. And the lens cover is driven by the linkage part to shield or open the lens through-hole.

Description

technical field [0001] The present invention relates to a lens cover device, in particular to a lens cover device which makes the lens cover thinner and uses a magnifying linkage mechanism to control the rapid sliding of the lens cover so as to facilitate the lens protection operation. Background technique [0002] Projector is a video equipment commonly used by modern people. It is widely used in presentations, conferences, education and training, or film and television entertainment. It mainly uses a lens to project data to the outside world (such as a screen, etc.). It affects the imaging quality of its image data projection. Therefore, a general projector is provided with a lens cover to protect the lens from being scratched or stained. Since the exposed lens cover is arranged on the outside of the projector, and the lens cover needs to be removed before using the projector, the lens cover is easy to drop and lose, which often causes troubles for users. Furthermore, if ...

AI Technical Summary

Problems solved by technology

[0004] Another existing design is an electric lens cover, such as Taiwan Patent No. 512255, which uses the power on and off to control the stepping motor to drive the gear and rack structure to drive the lens cover to open and close. However, this technology is prone to inaccurate interlocking transmission due to dust problems, and even related mechanisms are stuck, making it impossible to open and close the lens cover, and the temperature inside the projector will affect the stepping motor, resulting in dry lubricating oil or oil leakage. Affect the action of the lens cover, and it will greatly increase the cost, which is not economical

Moreover, the opening and closing of the lens cover can only be controlled electrically. If the user does not cover the lens cover and then shuts down the projector first, the lens cover needs to be powered on again to cover the lens cover, which affects the convenience of the user's operation.

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